Agave victoriae-reginae
Agave victoriae - reginae
Agave victoriae - reginae is a species of the genus Agave ( Agave ). The specific epithet victoriae reginae - honors the British Queen Victoria. English common names are " Royal Agave " and " Queen Victoria Agave ".
Description
Agave victoriae - reginae is highly variable and grows individually, with branches or many-headed. The small, compact rosette of leaves is stemless or forms in culture a short stem. The short, thick, rigid, linear to ovate leaves are closely arranged brick -shaped in the rule. Your tip is rounded. The leaf base is rounded up sharply keeled, the top is flat to concave. The green leaf blade is 15 to 20 (rarely to 25) cm long and 4-6 inches wide. It is marked with conspicuous white bars. The 2 to 5 mm wide, white -horned leaf margins run up to the leaf base by. Marginal teeth are not normally present. The one or three black, triangular - conical, pfriemlichen Enddornen are very wide at their base. They have a length of 1.5 to 3 centimeters.
The upright, dichtblütige in the upper half, " eared " inflorescence reaches a height of 3 to 5 meters. The partial inflorescences bear two to three 40 to 46 millimeters long blooms, whose powerful, gabeliger flower stalk is 40 to 46 millimeters long. The thick spindle-shaped, short-necked ovary is 18 to 24 millimeters long. The differently colored tepals are often tinged red or purple. The shallow, funnel-shaped flowering tube has a length of 3 millimeters. Its more or less the same point are 18 to 20 millimeters long.
The chromosome number is 2n = 60, 120
Systematics and distribution
Agave victoriae - reginae is common in the north-east of Durango, in central Nuevo León and Coahuila in the south of the Chihuahuan Desert in northern Mexico endemic and where it grows on calcareous, often rocky ground.
The first description by Thomas Moore was published in 1875.
Agave victoriae reginae - synonyms are variegate f hort. (without year, nom. inval. ICBN article 29.1), Agave victoriae reginae var compacta - hort. (without year, nom. inval. ICBN article 29.1), Agave victoriae reginae var stolonifera - hort. (without year, nom. inval. ICBN article 29.1), Agave considerantii Carruel (1875 ), Agave nickelsiae Rol. - Goss. (1895 ), Agave victoriae reginae - f nickelsiae ( Rol. - Goss. ) Trel. (1920), Agave victoriae reginae var - laxior A.Berger (1912 ), Agave ferdinandi -regis A.Berger (1915), Agave victoriae reginae - f dentata Breitung (1960), Agave victoriae reginae - f latifolia Breitung ( 1960), Agave victoriae reginae - f longifolia Breitung (1960), Agave victoriae reginae - f viridis Breitung (1960), Agave victoriae reginae - f ornata Breitung (1960, nom. inval. ICBN article 37.1) and Agave victoriae - reginae f stolonifera H.Jacobsen (1960, nom. inval. ICBN article 37.1).
The species belongs to the subgenus Littaea and there is the Marginatae group assigned. The wide variation of Agave victoriae - reginae is reinforced by introgressive hybrid swarms with Agave and Agave lechuguilla asperrima.
Endangering
At the request of Agave victoriae - reginae United States was included in Appendix II of CITES on 29 July 1983.